These codes are required when specifying the merchant’s country in API requests, such as in the countryISOCode field of the ThirdPartyOnboardingModel object.

The same set of country values is used across multiple API models and endpoints, even if the field names differ:

Used in:

countryISOCode (string, enum, required) in ThirdPartyOnboardingModel → Defines the merchant’s country when creating a lead.
country (string, enum, required) in PUT /onboarding/Leads/{leadId}/organisationdetails → Defines the merchant's registered country when updating company details.

Value	Description
BEL	Belgium
DEU	Germany
DNK	Denmark
ESP	Spain
FRA	France
GBR	United Kingdom
IRL	Ireland
NLD	Netherlands
POL	Poland
USA	United States of America